It shall be unlawful for any person, firm or corporation to publish, circulate, issue or display or cause to be published, circulated, issued or displayed, any communication, notice, advertisement or sign of any kind relating to the sale, rental or lease of real property within the City indicating exclusion of or preference for any person or group of persons based upon race, color, religion, national origin or ancestry.
('88 Code, Title IX, Ch. 114, § 9.225)